451 switch sa interface to be more like an api

[Donnie-Ice]

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Exploring this as a possible improvement. Is this functionality needed/wanted?

[codecov-commenter]

Codecov Report

❌ Patch coverage is 67.34694% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.24%. Comparing base (97427af) to head (91dd7c2).
⚠️ Report is 215 commits behind head on dev.

Files with missing lines	Patch %	Lines
src/sa/internal/sa_interface_inmemory.template.c	68.42%	10 Missing and 2 partials ⚠️
src/core/crypto_tc.c	20.00%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #452      +/-   ##
==========================================
+ Coverage   82.07%   82.24%   +0.16%     
==========================================
  Files          39       39              
  Lines       11929    11950      +21     
  Branches      967      978      +11     
==========================================
+ Hits         9791     9828      +37     
+ Misses       1769     1746      -23     
- Partials      369      376       +7     

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